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Corrugated Mailers

Protect your packages from the rigors of shipping by sending them in corrugated mailers. These mailers are boxes and large envelopes made of thick fiberboards. The walls of a corrugated mailer have a fluted inner board covered by one or two flat linerboards. Flutes are S-shaped arches that give a corrugated box its impressive structural strength. Staples® offers a wide selection of these sturdy, protective shipping boxes and envelopes.

Choosing the Right Corrugated Mailer for Your Package
The size of the item you wish to send will determine the type of corrugated mailer you need. You can send slim and small books as well as magazines, photos, and letters in corrugated envelopes. These corrugated document mailers ship flat and are stiff enough to get printed pages to their destinations without creases and are a strong alternative to plain window envelopes. For bigger items, you need larger mailers like corrugated boxes. These are ideal for shipping fragile items and bulky goods. They come in different sizes and styles. Their fluted walls provide ample stacking strength while insulating their contents from moisture, extreme temperatures, and physical damage.

Consider Board Strength When Comparing Corrugated Mailers
Manufacturers use different tests to determine the strengths of corrugated boxes. The most popular are the burst test and ECT or edge crust test. The wall thickness of a box determines its ECT score and burst strength. These then determine the maximum load capacity of the box. A single-walled corrugated mailer has a fluted layer between two linerboards. Boxes with burst strength ratings between 200 and 275 and ECT values between 23 and 55 pounds per square inch fall in this category. Double-walled mailers have two corrugated layers. They are stronger and offer better crush resistance. They can ship heavier items and come in strengths ranging from 200 to 600 pounds while scoring 42 to 82 on edge crush tests. Triple-walled boxes have three layers and can handle significantly higher weights. They are usually large containers for shipping heavy loads stacked on pallets.

What Is the Difference Between Corrugated and Cardboard Boxes?
While corrugated mailers feature fiberboard construction, cardboard boxes are made of paperboard. Regardless of its thickness, cardboard is a paper product while manufacturers use wood chips and shavings for corrugated boxes. A cardboard box also does not have an intermediate layer or fluted core.

What Are the Different Types of Corrugated Box Fluting?
There are five common types of corrugated box fluting designated by the letters: A, B, C, E, and F. An A-flute box has 30 to 36 flutes per linear foot with each one measuring 0.188 inches. B-flute boxes have 44 to 50 flutes that are 0.125 inches thick. Boxes with C flutes are the most common. Their flutes are intermediate in density and thickness between A and B flutes. E and F-flute boxes have more flutes but in much smaller sizes. Pizza boxes, sandwich packaging, and corrugated document mailers fall into these categories.

Are Linerboards Made of Chipboard?
No. Linerboards are usually made of recycled paper and kraft paperboard. Those made of kraft paper often appear brown. They can also come in white if made of bleached kraft paper. Linerboards do come in other colors besides white and brown.
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Partners Brand Corrugated Mailers, 16" x 6" x 6", White, 50/Bundle (M1666)
Item : 2301183 / Model : M1666
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 16" x 6" x 6"
$84.99
50/Bundle
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Partners Brand Literature Mailers, 16" x 10" x 3", White, 50/Bundle (ML16103)
Item : 2301145 / Model : ML16103
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 16" x 10" x 3"
$113.99
50/Bundle
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Jumbo Fold-Over Mailer, 38" x 26" x 1", White, 20/Bundle (M38261)
Item : 23978658 / Model : M38261
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  • These one-piece Jumbo Fold Over Mailers are great for oversized flat items like portfolios, maps and blue prints.
  • Mailer fully opens for easy packing
  • Simply lay product on the flat mailer, fold in and seal with tape
$183.99
20/Bundle
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Corrugated Mailers, 4" x 4" x 3", Kraft, 50/Bundle (M443K)
Item : 23978656 / Model : M443K
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  • Kraft Corrugated Mailers are light-weight to save on postage.
  • Perfect for shipping small, light-weight fragile items
  • Corrugated Mailers are manufactured from 200#/ECT-32-B kraft corrugated
$95.99
50/Bundle
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Partners Brand Corrugated Mailers, 10" x 8" x 6", White, 50/Bundle (M1086)
Item : 2301202 / Model : M1086
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 10" x 8" x 6"
$88.99
50/Bundle
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Partners Brand Corrugated Mailers, 11" x 8" x 4", White, 50/Bundle (MLR1184)
Item : 2301169 / Model : MLR1184
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 11" x 8" x 4"
$76.99
50/Bundle
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Partners Brand Corrugated Mailers, 22" x 6" x 2" White, 50/Bundle (M2262)
Item : 2301179 / Model : M2262
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 22" x 6" x 2"
$62.99
50/Bundle
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Partners Brand Corrugated Mailers, 10" x 7" x 6", White, 50/Bundle (M1076)
Item : 2301206 / Model : M1076
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 10" x 7" x 6"
$82.99
50/Bundle
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Partners Brand Kraft Deluxe Literature Mailers
Item : SS3784820
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  • Dimension: 12"H x 12"W x 2"D - 12"H x 12"W x 4"D
  • Type: Literature Mailer
  • Features: Maximum Protection for Your Most Important Documents, Assembles in Seconds Without Tape, Glue or Staples
As low as $102.59
Multiple options available
Partners Brand Literature Mailers, 16" x 8" x 3", White, 50/Bundle (ML1683)
Item : 2301083 / Model : ML1683
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 16" x 8" x 3"
$98.99
50/Bundle
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Partners Brand Corrugated Mailers, 9" x 9" x 4", White, 50/Bundle (M994)
Item : 2301170 / Model : M994
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 9" x 9" x 4"
$88.99
50/Bundle
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Easy-Fold Mailer, 18" x 18" x 2", Kraft, 50/Bundle (M18182BFK)
Item : 23978657 / Model : M18182BFK
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  • Economical kraft construction helps reduce mailing costs.
  • These one-piece mailers have scores at multiple depths to ensure the proper fit for your products
  • Simply place product in the center, fold in the sides at your desired depth and seal with tape
$176.99
50/Bundle
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Partners Brand Literature Mailers, 8" x 7" x 4", White, 50/Bundle (ML874)
Item : 2301078 / Model : ML874
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 8" x 7" x 4"
$89.99
50/Bundle
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Staples DVD Literature Mailer Kit
Item : SS1084374
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  • Insert holds DVD safely in place
  • Strong 200#/ECT-32-B oyster white construction
  • No tape or glue needed for assembly
As low as $59.29
Multiple options available
Partners Brand Kraft Corrugated Mailers
Item : SS3784829
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  • Dimension: 7"H x 4"W x 2"D - 7"H x 5"W x 4"D
  • Type: Corrugated Mailer
  • Features: Maximum Protection for Your Most Important Documents
As low as $18.99
Multiple options available
Partners Brand Corrugated Mailers, 3" x 3" x 3", Kraft, 50/Bundle (M333K)
Item : 2301163 / Model : M333K
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B kraft corrugated.
  • 3" x 3" x 3"
$34.99
50/Bundle
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Partners Brand Kraft Corrugated Mailers 50 per Bundle
Item : SS3784830
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  • Dimension: 10"H x 4"W x 2"D - 10"H x 4"W x 4"D
  • Color: Kraft
  • Type: Corrugated Mailer
As low as $28.99
Multiple options available
06"x4"x2" Partners Brand Corrugated Mailers, 50/Bundle (M642K)
Item : 1004941 / Model : M642K
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  • Corrugated Mailers are perfect for shipping small, light-weight fragile items.
  • Corrugated Mailers are manufactured from 200#/ECT-32-B kraft corrugated.
  • Usable Inside Dimensions: 06"x4"
$18.19
50/Bundle
Staples® Self-Seal Utility Flat Mailers, White, 12-1/4" x 9-3/4", 200/Case
Item : 947732 / Model : ENVRM5SLWSS
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  • Dimensions: 12-1/4" x 9-3/4"
  • Dimensions: 12-1/4" x 9-3/4"
  • Environmentally-friendly mailers are made from 100% recycled paperboard and are 100% recyclable.
$117.99
200/Case
JAM Paper® Photo Mailer Envelopes, 13 x 18, White, 6 pack (6PSWb)
Item : 24006048 / Model : 6PSWB
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  • White Photo Mailer - Recycled Envelope
  • Size: 13 x 18 inches - Quantity: Sold Individually
  • Features a self-adhesive strip for quick and easy closure & is made from 100% recycled content
$12.00
6/Pack